I have an API with filtering support using RSQL, having an endpoint GET /movies?filter=genre==Music;rating==TV-14;language==es
In order for the web app to populate the dropdowns in the filtering form it needs to make independent request to /genres, /ratings and /languages.
I am wondering what could be a solution to defined a REST Resource for returning these 3 lists in a single request. Does this goes against REST?
Thank you in advance for any recomendation